A worker with Outfront Media — which handles the agency’s advertising — took down the ad inside the 7th Ave. B/Q station along Flatbush Avenue at 5:45 p.m. with a box cutter, leaving behind a blank space.

The Outfront Media employee, who identified himself as John, said his boss called him in on his day off to take down the poster, and also instructed him to check other stations for the Spacey ad.

“My boss told me the ad is old news,” he told The Post, adding that he’s not sure if he’s making overtime for the task.

Straphangers were disgusted by the “Underwood 2016” sign, which advertised the fourth season of the show. That season ran in March 2016.

“He’s just like the monster he played in ‘House of Cards,'” said Lisa Torres, 33, of Fort Greene. “It’s an injustice for him to be all over the subway. Even one is one too much.”

The MTA did not respond to requests for comment, or say whether the Outfront Media worker was paid overtime for removing the ad.